K Pierroton-France

Objective
Analysis of irrigated maize response to Potassium nutrition
Description
The trial has been put into fallow since 2016
Farm operation data?
Sample archive?
Samples available?
 
Data Access Statement
Available to any researcher on request
Data license
Don't know
Data policy
Yes (not online)
Organization
French National Institute for Agricultural Research (INRA)
research organisation
People
Dr Jordan-Meille Lionel
experiment manager
Institut National de la Recherche Agronomique
Agriculture-Environnement
Dr Mollier Alain
principal investigator
Institut National de la Recherche Agronomique
Agriculture-Environnement
Denoroy Pascal
data manager
Institut National de la Recherche Agronomique
Agriculture-Environnement

Site: K-Pierroton France

Local code
33610
Location
Pierroton-Cestas
Nouvelle Aquitaine
FRANCE
Geographic location
44.7417, 0.7831
© OpenStreetMap contributors
Elevation
58 Metres
Slope
(flat facing)
Visits permitted?
Yes
Visiting arrangements
email booking
History
Converted from pine forest to maize crop in 1995. The field is still surrounded by planted pine forest.
Management
Irrigated crops. Mainly maize, and occasionally some legumes (carrots, peas...) as main crops. No inter-cropping.
Soil type
podzol
Soil description
In the ISRIC nomenclature (Word soils Information service), the soil is described as an "Umbric ortsteinic podzol" It is a naturally acid sandy podzol, rich in organic matter (the soil is often described as a "black sand"). Below 50 t0 80 centimeters, there is a hard layer of Iron oxydes and hydroxydes, mixed with organic matter, called "Alios". Roots can not go through.
Soil properties
VariableDepthValue (range)UnitsRef yearEstimated?Baseline?
soil pH0 – 25 Centimetres6.2 (5.5 – 6.5) 2014
soil density0 – 25 Centimetres1.36 Kilograms per litre2014
cation exchange capacity0 – 25 Centimetres5 (4 – 6) cmol per kilogram2014
soil organic carbon0 – 25 Centimetres22.6 gram per kilogram2014
sand content0 – 25 Centimetres933 gram per kilogram2014
silt content0 – 25 Centimetres21 gram per kilogram2014
clay content0 – 25 Centimetres47 gram per kilogram2014
Climatic type
temperate oceanic climate
Climate description
Dryer season during summer. Can be very hot from 15th July to 15th August. Strong spring winds can destroy seedlings with sans saltation.
Climate properties
VariableTime periodValue (range)Units
precipitation 1980 – 2018 900 (633 – 1231) millimeter
evapotranspiration (Penman) 1980 – 2018 868 (721 – 988) millimeter
solar radiation 1980 – 2018 4829 megajoule per square meter
air temperature 1980 – 2018 13.45 degree Celsius
thermal time (base 6) for maize production 1980 – 2018 (2700 – 3500) degree-days

Design period: K-Pierroton France as Maize, first period (1996-2001) with a 0 K treatment (1996—2001)

Design Type
Randomized complete block design
Description
This K fertilization trial has 5 K modalities and 4 blocks. It has been divided into three periodes. The first period (1996-2001) applied doses from 0 to 160 kg K par ha (approximately 4 times the exports), the second period (2002-2013) applied doses from 20 to 160 kg K per ha, and the third period used the trial to test Water and Potassium interactions (2014-2015). The main crop was maize; we have used 3 successive varieties during the period (Volga, Cecila, DKC5783). In 2006, 2010 and 2013, the trial was occupied by a fallow, carrots and beans, respectively.
Design description
plot dimensions: 18 m X 12.8 m 5 K doses (0- 0.5 - 1 - 2 - 4 times the exports) 0 - 20 - 40 - 80 - 160 kg K/ha/year
Number of blocks
4
Number of plots
20
Number of subplots
0
Number of replicates
0
Number of harvests per year
1
Crop
CropYears grown
maize 1996—2015
Factor
potassium fertilizer exposure
The K fertilizer is spread before ploughing and then mixed in the 25 first centimeters. Values of K applied are expressed in K and not in K2O
Plot application: Whole plot
potassium  (0 kg/ha)
1996—2001
Applied to crop: maize
Application frequency: 1
Application method: broadcast application method
Chemical form: potassium chloride
potassium  (20 kg/ha)
1996—2001
Applied to crop: maize
Application frequency: 1
Application method: broadcast application method
Chemical form: potassium chloride
potassium  (40 kilogram per hectare)
1996—2001
Applied to crop: maize
Application frequency: 1
Application method: broadcast application method
Chemical form: potassium chloride
potassium  (80 kilogram per hectare)
1996—2001
Applied to crop: maize
Application frequency: 1
Application method: broadcast application method
Chemical form: potassium chloride
potassium  (160 kilogram per hectare)
1996—2001
Applied to crop: maize
Application frequency: 1
Application method: broadcast application method
Chemical form: potassium chloride
Measurements
VariableMaterialUnitsFrequencyScaleComment
grain yield traitmaizet/ha116 meters2 consecutive lines of 8 meters manually sampled
thousand grain weightmaizeg116 meters2 consecutive lines of 8 meters manually sampled
grain quality traitsmaizeN/A16 metersnumber of grains per cob
potassium contentmaizemg/kg116 meters
grain quality traitsmaize%116 meterswater content
potassium contentSoilmg/kg0.25plotSoils are collected every 4 years (0-25 25-50 50-75 cm)

Design period: K-Pierroton France - K and Water interation (2014-2015) (2014—2015)

Description
This trial crosses the effect of the 5 K treatments with two water modalities. The "non-stressed" plants receive as much water as needed (ETc calculations), and the "stressed" plants are only irrigated in order to keep the soil water content just above the wilting point.
Design description
Initial blocks 1 and 2 have been gathered for the "watered plants" modality, and blocks 3 and 4 have been gathered for the "limited watered plants" modality. So each one of the water modality has only two replicates. plot dimensions: 18 m X 12.8 m 5 K doses (0.5- 0.75 - 1 - 2 - 4 times the exports) 20 - 30 - 40 - 80 - 160 kg K/ha/year
Number of blocks
0
Number of plots
20
Number of replicates
2
Number of harvests per year
1
Crop
CropYears grown
maize 2014—2015
Factors
potassium fertilizer exposure
The units of K applied is kg of K per ha and not K2O
Plot application: Whole plot
potassium  (20 kilogram per hectare)
2014—2015
Application frequency: 1
Application method: broadcast application method
Chemical form: potassium chloride
potassium  (30 kilogram per hectare)
2014—2015
Application frequency: 1
Application method: broadcast application method
Chemical form: potassium chloride
potassium  (40 kilogram per hectare)
2014—2015
Application frequency: 1
Application method: broadcast application method
Chemical form: potassium chloride
potassium  (80 kilogram per hectare)
2014—2015
Application frequency: 1
Application method: broadcast application method
Chemical form: potassium chloride
potassium  (160 kg/ha)
2014—2015
Applied to crop: maize
Application frequency: 1
Application method: broadcast application method
Chemical form: potassium chloride
water stress
level
Plot application: Sub plot
Effect: Direct
water stress  (350 mm)
2014—2015
Applied to crop: maize
Application method: aerial application
Water stress  (550 mm)
2014—2015
Application method: aerial application
Factor combinations
Interaction K X Water  2014—2015
potassium fertilizer exposure: -
Measurements
VariableMaterialUnitsFrequencyScaleComment
grain yield traitmaizet/ha116 meters
thousand grain weightmaizeg116 meters
grain yield traitmaize116 metersnumber of grains per cob
potassium contentmaizemg/kg116 meters
grain yield traitmaize%116 meterswater content
potassium contentSoilmg/kg116Soils were collected in 2014 and 2015 (0-25 25-50 50-75 cm)

Design period: K-Pierroton France as maize, Second Period (2002-2013), without any 0 K modality plots (2002—2013)

Description
This K fertilization trial has 5 K modalities and 4 blocks. It has been divided into three periodes. The first period (1996-2001) applied doses from 0 to 160 kg K par ha (approximately 4 times the exports), the second period (2002-2013) applied doses from 20 to 160 kg K per ha, and the third period used the trial to test Water and Potassium interactions (2014-2015). The main crop was maize; we have used 3 successive varieties during the period (Volga, Cecila, Mo ). In 2006, 2010 and 2013, the trial was occupied by a fallow, carrots and beans, respectively.
Design description
plot dimensions: 18m X 12.8m 5 K doses (0.5- 0.75 - 1 - 2 - 4 times the exports) 20 - 30 - 40 - 80 - 160 kg K/ha/year
Number of blocks
4
Number of plots
20
Number of subplots
0
Number of replicates
0
Number of harvests per year
1
Crop
CropYears grown
maize 2002—2013
Factor
potassium fertilizer exposure
The K fertilizer is spread before ploughing and then mixed in the 25 first centimeters. Values of K applied are expressed in K and not in K2O
potassium  (20 kg/ha)
2002—2013
Application frequency: 1
Application method: broadcast application method
Chemical form: potassium chloride
potassium  (30 kilogram per hectare)
2002—2013
Application frequency: 1
Application method: broadcast application method
Chemical form: potassium chloride
potassium  (40 kilogram per hectare)
2002—2013
Application frequency: 1
Application method: broadcast application method
Chemical form: potassium chloride
potassium  (80 kilogram per hectare)
2002—2013
Application frequency: 1
Application method: broadcast application method
Chemical form: potassium chloride
potassium  (160 kilogram per hectare)
2002—2013
Application frequency: 1
Application method: broadcast application method
Chemical form: potassium chloride
Measurements
VariableMaterialUnitsFrequencyScaleComment
grain yield traitmaizet/ha116 meters2 consecutive lines of 8 meters are manually sampled
thousand grain weightmaizeg116 meters2 consecutive lines of 8 meters are manually sampled
grain yield traitmaize116 metersnumber of grains per cob
potassium contentmaizemg/kg116 meters2 consecutive lines of 8 meters are manually sampled
grain yield traitmaize%116 meterswater content

Related publications

  • Leaf area establishment of a maize (Zea Mays L.) field crop under potassium deficiency
  • How Does Water-Stressed Corn Respond to Potassium Nutrition? A Shoot-Root Scale Approach Study under Controlled Conditions